【求助】我的nmap怪怪的

[bruce0306]

我試著去掃描我自己的另外一台機器，結果出現如下

Starting nmap V. 3.00 ( www.insecure.org/nmap )
Note: Host seems down. If it is really up, but blocking our ping probes, try -P0

Nmap run completed -- 1 IP address (0 hosts up) scanned in 61 seconds

我的機器有開，且沒預設防火牆，請問各位大大，為什麼會這樣？

[achi]

有試過-p0的參數嗎?